Schema learning two--indicators

<?XML version= "1.0" encoding= "UTF-8"?><Xs:schemaXmlns:xs= "Http://www.w3.org/2001/XMLSchema"elementFormDefault= "qualified"attributeFormDefault= "unqualified">    <!--Order Indicator -    <!--All indicator: child elements can appear in any order, and each child element must appear only once -    <xs:elementname= "Person">        <Xs:complextype>            <Xs:all>                <xs:elementname= "FirstName"type= "Xs:string"/>                <xs:elementname= "LastName"type= "Xs:string"/>            </Xs:all>        </Xs:complextype>    </xs:element>    <!--the appearance of the choice indicator element -    <xs:elementname= "Person">        <Xs:complextype>            <Xs:choice>                <xs:elementname= "Employee"type= "Xs:string"/>                <xs:elementname= "Member"type= "Xs:string"/>            </Xs:choice>        </Xs:complextype>    </xs:element>    <!--sequence indicator child elements must appear in a specific order -    <xs:elementname= "Person">        <Xs:complextype>            <xs:sequence>                <xs:elementname= "FirstName"type= "Xs:string"/>                <xs:elementname= "LastName"type= "Xs:string"/>            </xs:sequence>        </Xs:complextype>    </xs:element><!--Occurrence Indicator -    <!--maxoccurs indicator Specifies how often an element appears -    <xs:elementname= "Person">        <Xs:complextype>            <xs:sequence>                <xs:elementname= "Full_name"type= "Xs:string"maxOccurs= "unbounded"/>                <xs:elementname= "Child_name"type= "Xs:string"maxOccurs= "Ten"minOccurs= "1"/>            </xs:sequence>        </Xs:complextype>        </xs:element><!--Group Indicator -    <!--You must define an all, choice, or sequence element within the group declaration. The following example defines a group named "Persongroup", which defines a set of element definitions that must occur in an exact order and can be referenced in another definition . -    <Xs:groupname= "Persongroup">        <xs:sequence>            <xs:elementname= "FirstName"type= "Xs:string"/>            <xs:elementname= "LastName"type= "Xs:string"/>            <xs:elementname= "Birthday"type= "Xs:date"/>        </xs:sequence>    </Xs:group>    <xs:elementname= "Person"type= "Persongroup" />        <Xs:complextypename= "Personinfo">                <xs:sequence>                    <Xs:groupref= "Persongroup"/>                    <xs:elementname= "Country"type= "Xs:string"/>                </xs:sequence>        </Xs:complextype></Xs:schema>

Schema learning two--indicators